package com.example.demo.crypto;

import com.example.demo.util.AesEncryptUtils;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;


/**
 * 请求响应处理类<br>
 * <p>
 * 对加了@Encrypt的方法的数据进行加密操作
 *
 */
@ControllerAdvice(basePackages = "com.example.demo")
public class EncryptResponseBodyAdvice implements ResponseBodyAdvice<Object> {

    @Override
    public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
        return NeedCrypto.needEncrypt(returnType);
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,
                                  Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        //实现具体的加密方法
		return AesEncryptUtils.encrypt(String.valueOf(body));
    }

}